Scenery, sandy beaches and solitude are key to the Ionian island’s appeal, according to the report, which put party-loving Mykonos in last place

Kefalonia, the largest of the Ionian islands, with its emerald-coloured mountains, secluded coves and underground lakes, has been crowned the best Greek island by Which?.

Abundant sandy beaches, scenery uninterrupted by high-rise buildings and access to much-sought-after solitude sealed the deal for the island, off the west coast of mainland Greece, in the consumer body’s annual survey. Which? asked more than 1,000 visitors to rate the 10 main Greek islands on factors including beaches, attractions, scenery and value for money.